く	る
狂

う

Godan verb, intransitive verb

1. to go mad, to lose one's mind, to go crazy, to go insane.
2. to get out of order, to go amiss, to malfunction, to become imprecise.
3. to go wrong (of a plan or expectation, etc.), to fall through, to get mixed up.
4. to go crazy (over someone or something), to get enthusiastic, to go wild.